Oxygen, Lambda Sensor Exhaust Oxygen Sensor (O2 Sensor) Measures oxygen in the exhaust so the ECU can correct the air-fuel mixture NAP "CLS10088" - Not availablePEUGEOT - 206, 307, Partner, 207, 306; CITROËN - C5, Xsara; IRAN KHODRO - Peugeot 206